Allen Dershowitz said there were two victims...Zimmerman was following Martin..then the police told him to cease and stop what he was doing...he did so...then Trayvon decided to go after Zimmerman and asked him if he had a problem...the violence progressed from there, but Zimmerman definitely had a right to defend himself...All the scalp abrasions were on the back of Zimmerman's head, which was repeatedly banged against the ground. Dershowitz, while liberal really knows the Laws!